Related Experiment Video
Updated: Jan 13, 2026

Dermoscopy Aids in the Diagnosis of Discoid Lupus Erythematosus
Published on: May 16, 2025
Temporal Triangular Alopecia-Clinical and Dermoscopic Features of a Rare Entity
Beata Zagórska1,2, Jakub Żółkiewicz1,2, Urszula Maińska1,2
1Department and Clinic of Dermatology, Venerology and Allergology, Medical University of Gdansk, 80-214 Gdansk, Poland.
None:
We present the case of an 18-year-old female patient who attended the Dermatology Outpatient Clinic for a routine total body examination. Clinical evaluation revealed a triangular, non-scarring alopecic patch in the left temporal region, which the patient reported had been present since birth. Based on clinical and trichoscopic findings, a diagnosis of temporal triangular alopecia (TTA) was established. Given the non-progressive nature of the condition and the absence of any impact on quality of life, no treatment was initiated at the patient's request.
Related Concept Videos
Papillary Dermis
The dermis might be considered the "core" of the integumentary system, as distinct from the epidermis and hypodermis. It contains blood and lymph vessels, nerves, and other structures, such as hair follicles and sweat glands. The dermis is made of two layers of connective tissue that comprise an interconnected mesh of elastin and collagenous fibers, produced by fibroblasts.
Papillary Layer
The papillary layer is made of loose, areolar connective tissue, which means the collagen...
Skin Cancer
Basal Cell Carcinoma (BCC): BCC is the most common type of skin cancer, accounting for about 80% of cases. It typically develops in...
Accessory Structures of the Skin: Hair Growth and Types
Skin Diseases and Disorders
Gram-positive Staphylococcus spp. and Streptococcus spp. are responsible for many of the most common skin infections. However, many...

